NC Bench
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Run: 2026-02-19-01KHVP9S146K5G6MFFYYZGR27N
Run Details
Model:
Gemini 3.1 Pro (Preview)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
25.5s
Cost:
$0.038728
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Darkness filled the quiet room where the dead body lay. Blood stained the expensive Persian rug in thick red pools. Detective Miller stood near the doorway with a heavy sigh. Rain beat against the cracked window like tiny glass hammers. A shattered whiskey glass rested beside the pale rigid hand. Someone wanted this wealthy businessman completely removed from the picture. Miller pulled out his notebook to record the grim details. The grandfather clock chimed midnight through the cold silent mansion. Only one single suspect possessed the key to this office. He stepped closer to examine the shining silver murder weapon. A sharp dagger protruded directly from the left chest cavity. Footsteps echoed loudly down the dark hallway behind the detective. He drew his service revolver and turned toward the noise. The killer was definitely still hiding inside this massive house.
created_at
"2026-02-19T19:33:46.495Z"
2/19/2026, 7:33:46 PM
model
"google/gemini-3.1-pro-preview-20260219"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3981
moderation_latency
(null)
generation_time
25338
tokens_prompt
46
tokens_completion
871
native_tokens_prompt
38
native_tokens_completion
3221
native_tokens_completion_images
0
native_tokens_reasoning
3063
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"STOP"
usage
0.038728
router
(null)
provider_responses
0
endpoint_id
"2abf5677-0826-45d9-8470-3d62c31d54a1"
is_byok
false
latency
3981
model_permaslug
"google/gemini-3.1-pro-preview-20260219"
provider_name
"Google AI Studio"
status
200
api_type
"completions"
id
"gen-1771529626-BObavyAklwOEz2IIMVTV"
upstream_id
(null)
total_cost
0.038728
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
14
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
10
11
10
12
10
13
10